> ## Documentation Index
> Fetch the complete documentation index at: https://docs.svrnos.com/llms.txt
> Use this file to discover all available pages before exploring further.

# GER-431 · Vendor Update Without Validation Gate

> Third-party model vendor pushes a model update — minor version bump, weight refresh, RLHF re-tune — and the operator deploys the new variant without local re-validation of safety properties.

export const Badge = ({children, tone = "default", title}) => {
  const tones = {
    default: "bg-neutral-100 text-neutral-700",
    green: "bg-green-100 text-green-900",
    amber: "bg-amber-100 text-amber-900",
    blue: "bg-blue-50 text-blue-900",
    gray: "bg-neutral-50 text-neutral-600"
  };
  return <span className={`inline-flex items-center px-2 py-0.5 text-xs font-mono uppercase tracking-wider rounded ${tones[tone] ?? tones.default}`} title={title}>
      {children}
    </span>;
};

<div className="flex flex-wrap gap-2 mb-8 mt-2">
  <Badge tone="green">Documented</Badge> <Badge>Tier 4xx</Badge> <Badge>Layer L6</Badge> <Badge tone="blue" title="SVRNOS-assigned code in an HTTP-unassigned slot">Namespace-Claim</Badge> <Badge tone="gray">Added v0.2</Badge>
</div>

*Operator / Platform Errors*

## Definition

Third-party model vendor pushes a model update — minor version bump, weight refresh, RLHF re-tune — and the operator deploys the new variant without local re-validation of safety properties.

## Distinct from

* [**GER-309**](/ger/codes/309) — Operator did not re-measure after vendor model update → this code. Vendor itself measured harm and shipped → GER-309.

## Documented case

<Card title="OpenAI — Sycophancy in GPT-4o: what happened and what we're doing about it (April 2025)" href="https://openai.com/index/sycophancy-in-gpt-4o/">
  vendor
</Card>

## Tags

`eu-ai-act`

### Contributors

[Satyam Kumar Das](https://www.linkedin.com/in/satyamkumar/), AppScale

### Cite

```
SVRNOS. (2026). GER-431: Vendor Update Without Validation Gate. Governance Error Register. https://docs.svrnos.com/ger/codes/431
```